Direct Observation of Domain-Wall Configurations Transformed by Spin Currents
Direct Observation of Domain-Wall Configurations Transformed by Spin Currents
Direct observations of current-induced domain-wall propagation by spin-polarized scanning electron microscopy are reported. Current pulses move head-to-head as well as tail-to-tail walls in submicrometer Fe20Ni80 wires in the direction of the electron flow, and a decay of the wall velocity with the number of injected current pulses is observed. High-resolution …